28080035525 has 6 divisors (see below), whose sum is σ = 34819244082. Its totient is φ = 22464028400.

The previous prime is 28080035521. The next prime is 28080035561. The reversal of 28080035525 is 52553008082.

It can be written as a sum of positive squares in 3 ways, for example, as 10016406724 + 18063628801 = 100082^2 + 134401^2 .

It is not a de Polignac number, because 28080035525 - 2² = 28080035521 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28080035521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 561600686 + ... + 561600735.

It is an arithmetic number, because the mean of its divisors is an integer number (5803207347).

Almost surely, 2^28080035525 is an apocalyptic number.

28080035525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28080035525 is a deficient number, since it is larger than the sum of its proper divisors (6739208557).

28080035525 is a wasteful number, since it uses less digits than its factorization.

28080035525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123201431 (or 1123201426 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 38.

The spelling of 28080035525 in words is "twenty-eight billion, eighty million, thirty-five thousand, five hundred twenty-five".